<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>JS Bin</title>
  <link rel="stylesheet" href="grid-system.css">
</head>
<body>
  <div class="container">
    <div class="box minwidth maxwidth">1</div>
    <div class="box minwidth maxwidth">2</div>
    <div class="box minwidth maxwidth">3</div>
    <div class="box minwidth maxwidth">4</div>
  </div>
    <div class="container">
      <div class="row">
        <div class="aside">aside</div>
        <div class="main">main</div>
      </div>
    </div>
</body>
</html>
